Controlling system for motor-vehicles.



D. M. SMITH.

CONTROLLING SYSTEM FOR MOTOR VEHICLES.

APPLIOATION FILED DEC. 11, 1906. RENEWED MAR. 12, 1910.

Y Y Patented 0011.27, 1914.

2 SHEBTS-SHEET 1.

D. M. SMITH CONTROLLING SYSTEM FOR MOTOR VEHIGLES.

APPLICATION FILED DEG.,11, 1,906. RENEWED MAR. 12, 1910.

1,1 15,120. Patented 0011221914.

2 SHEETSSHEET 2.

l vi in eases W5 QQ Tbga.

'5 TE sTaTn PATENT @FFTCE DEMPSTER M; SMITH, OF WASHINGTON, DISTRICT OFCOLUMBIA.

CONTROLLING SYSTEM FOR MOTOR-VEHICLES.

Tarmac,

Specification of Letters Patent.

Original application filed April 24, 1905, Serial No. 257,216. Dividedand this application filed December 11, 1906, Serial No. 347,364..-

T aZZ whom it may] concern: I

Be it known that I, DEMPSTER M. Sr rrn, a citizen of the United States,and resident of Washington, in the District of Colum-' other motors incertain cases.

The characteristics and advantages of my invention are hereafterparticularly described in connection with a detailed description of theaccompanying drawing which illustrates an exemplifying structure inwhich the invention is embodied and in which,

Figure 1 is a diagrammatic view of mechanism embodying my invention;Fig. 2, a central sectional view of a representative motorspeed-controlling element; and Fig. 3, a partial diagrammatic view of amodified form of my invention.

Referring first'to Fig. 1, 1 is a pedal 18- ver mounted on a shaft 2;the lever may be I revoluble in relation to the shaft or fixed to it,and the shaft mounted in suitable bearings; 1 is a spring, whichtypifies means for returning lever 1 toward the left after .it has beenmoved toward the right by the op; erator; 3 is a pedal pivotally mountedat t on lever 1; 5 an extension of pedal 3; 6 a link connected toextension 5; 7 a cam having a hub 8 loosely mounted on shaft 2; 9

an arm of cam 7 connected to link 6; 10 aact location of the spring is,however, im

material; 14 a link loosely mounted on shaft 2 and connected pivotallyto lever 12 at point 15, serving simply to support the Renewed March 12,1910. Serial No. 549,006.

lever; 16 is the steering column; 17 a lever which constitutesahandcontrolling device thereon; 18 is a rod connected to lever 17 19 anarm on the lower end of the rod 18; 20 a link connecting arm 19 with thedifferential lever 12 at 15.

Pedal lever 1, or pedal 3, depending on the manner of using themechanism as will hereafter appear, constitutes a foot regulating devicefor affecting the speed of themotor, and hand-lever 17 constitutes ahand regulating device for affecting the motor speed.

21 is the general designation of a representative motor speedcontrolling device; in the present instance; this is a carburetor orthrottle element which serves to regulate the quantity or quality ofexplosive mixture admitted to the engine; instead of the particularcontrolling device described, how ever, any other which serves to affectthe mo-. tor speed mightbe substituted.

22 is a tu (see Fig. 2). Tube 22 constitutes a mixing chamber wheregasolene or other fuel is A e admitting'air to the carv bureter andleading past the fuel nozzle 22 mixed with air in suitable proportionsand this gas -passes to the cylinders through a 1 pipe connected to theoutlet 22. 4

A fixed opening 22 is provided between i the mouth of tube 22 and thegasolene jet so as to permit the ordinaryoperation of the motor,

a fixed part of the earbureter and connected ,to move in unison by cogs26; these shutters.

serve to regulate the admission ofadditional airto, the carburetor andso to vary the vacuumin tube 22 and thus to regulate the amount of fueldrawn from the gasolene nozzle, By this arrangement closing the shutters23and 24:, increases the speed of the motor by 7 raising the vacuum intube 22 and conversely opening the shutters decreases the motor speed byreducing the vacuum. The object of using a double shutter is simply tocentralize the blast of air entering the carbure ter and if this featureis found unnecessary .a single shutter may be used. Shutters 28., 24, orthe single shutter or,

other equivalent which may be substituted 23, QTareshutterspivoted, at25, 25 to id's therefor, is only representative of anymov able member:which may serve to regulate the speed of the motor.

' and 35 is a link connecting the lower end of differential lever 12 andarm 27.

Pedal lever l is conveniently employed to control certain functions ofav motor vehicle other than the motor speed. Since cam 7 is normallyrevoluble through the same angle as lever 1, however, movement of saidlever will affect the motor speed after the slant surface of the camcomes in contact with cam follower 13, in a manner which will beunderstood hereafter. For the present it may be assumed that lever 1 isstationary at such an angle that the slant surface of the cam is nearthe cam follower. The ball of the operators foot rests on pedal 3. Themotor being in motion, to increase its speed lever 17 which isconvenient to the operators hand is moved forward. This carries arm 19and link 20 to the right and since cam follower 13 is in contact withthe concentric surface of the cam the lower end of differential lever 12is moved to the right, and this mov'ement is communicated through link35 to the motor-speed controlling element. Opposite movement of thehandregulating device serves to decrease the speed of the motor in anobvious manner.

It is often desirable to vary the speed of the-motor by movement of thefoot when for example, the hands are occupied in steering ormanipulating other controlling members than those forming the subject ofmy invention, or when it-is not desired to dis turb the hand-regulatinglever 17 In my invention this is done by the operator extending the toesof the foot resting upon pedal 3. This rotates the pedal in a clockwisedirection as viewed in Fig. 1, moving arm 5 downward and through link 6rotates cam 7 in the same direction. The slant face of the cam thereuponcomes in contact with the cam follower 13 and the upper end ofdifferential lever 12 is moved to the left; the lever now turns on point15 as a fulcrum and the lower end of the lever moves to the right,carrying link 35, and arm 27 in the same direction, further closingshutters 23, 4 and increasing the speed of the motor. Upon relaxingpressure on the upper part of pedal 3 the pedal and other partscontrolled by it will return under influence of spring 11 to theirnormal position indicated by the position of the hand controllingelement 17.

It has been assumed that pedal lever 1 remains stationary. Incontrolling other functions of the machine, however, this lever issometimes moved forward and such movement carries with it cam 7 so as togive an acceleration of the motor corresponding to the angular positionof the lever. At the same time the pedal can be acted on by the foot ofthe operator so as to increase the enables the foot to be removed fromthe pedal without disturbing the speed of the motor and enables theoperator to make a more permanent adjustment of the motor speed bymanipulation of the pedal.

In Fig. 3 the modification is shown in which pedal 3 is rigid with pedallever 1 and cam 7 is operated by a separate lever 40 pivoted to thepedal lever at 10. This lever 40 is curved near its lower end andengages the cam by means of a finger 4:3 engaging a slot 7 in the cam.The differential lever 12 is supported by a link H -connected to thelever at its lower end and to a fixed support 424: at its upper end.Link 35 is to be connected at its forward end to motor controllingelement 21, as in Fig. 1. Other details of Fig. 3 and its method ofoperation it is thought will be obvious from the foregoing description.

Pedal lever 1 may be connected through shaft 2, or otherwise, with aclutch which serves to connect or disconnect the motor with the drivingwheels of the vehicle, and in this case when pressure is exerted uponthe pedal lever the clutch may be engaged or disengaged, and at the sametime by tilting the pedal 3 the motor-speed may be increased ordecreased, as desired. It will be noted that shutters 23, 24, vary theamount of gas admitted to the engine, and, therefore, they typify athrottling device for controlling the engine speed and in turncontrolled-by pedal 3.

Having described my invention, What I claim is: v

1. Controlling mechanism for motor vehicles, comprising a motor-speedcontrolling element, a hand regulating device, a foot regulating device,and differential mechanism connecting said devices with said element andserving to maintain the element under all operative conditions in aposition dependent upon the relative positions-of the devices.

2. Controlling mechanism for motor Vehicles, comprising a motor-speedcontrolling element, a hand regulating device, a foot regulating device,and mechanism intermedi ate said devices and said element for varyingits position by movementof either of said devices while the otherremains stationary in any of its operative positions.

3. Controlling mechanism for motor vehicles, comprising a motor-speedcontrolling element, a hand regulating device, a foot I regulatingdevice, and differential mechamaniac 'nism positively connecting saiddevice with said element serving to give an immediate and definitemovement to said element upon movement of either of saiddevicesirrespective of the position of the other device.

4. 1116 combination of a movable motorcontrolling element, ahand-regulating device, a foot-regulating device, and a differentialmember so connected to said element that the position of the element isdependent under all conditions upon the relative positions of saiddevices.

5. Controlling mechanism for motor vehicles, comprising a motor-speedcontrolling element, a hand regulating device, a foot regulating device,and mechanism intermediate said devices and said element for varyingitsposition by movement of either of said devices while the otherremains stationary in any of its positions.

6. The combination of a motor-speed controlling element, a handregulating device, a foot regulating device, a differential member whoseposition is dependent under all conditions upon the relative positionsof the devices, and a positive connection between the member and theelement.

7 The combination of a motor-speed controlling element, a hand and afoot regulating device, and mechanism intermediate the devices and theelement whereby the element may be moved to approximately the extremelow or high speed position by movement of either of the devicesirrespective of the position of the other.

8. The combination of a motor-speed controlling element, a hand and afoot regulating device, and means acting to maintain said element atall-times in a position dependent upon the relative positions of saiddevices.

9. In a motor vehicle the combination of a hand regulating device, afoot regulating device, and means acting upon movement of either device,irrespective of the position of the other, to vary the speed of themotor.

10. In a motor-vehicle having an internalcombustion motor, thecombination of a vaporizer, a movable vaporizing-element, a handregulating device, a foot regulating device, and means serving tomaintain said element in a position depending upon the relativepositions of said devices.

" 11. In a motor-vehicle having an internalto maintain said element in aposition depending upon the relative positions oftsaid:

devices. o 12. In a motor vehicle, the combination of a motor-speedcontrolling element, a pedal,

device, a foot regulating device, and d1 erential mechanism serving ahand regulating-lever, a cam moving with the pedal, a differentialmember acted upon by the cam at one point and by the lever at anotherpoint, and a link connecting a third point of the differential memberwith the element.

13."Tn a motor vehicle, the combination of a motor-speed controllingelement, a pedal, a hand regulating-lever, a cam connected her having acam-following engaging the cam, a link connecting the lever and themember, and a connection between the memher and the element.

.14. In a motor vehicle, the combination of a motor-speed controllingelement, a pedal lever, a pedal pivoted thereon, a cam rotatable aboutthe pivotal axis of the lever, a stop on the lever, a spring urging thecam to rotateuntil checked by the stop, a link connecting the cam andpedal, a differential lever having a cam-follower acted on by the cam, ahand regulating device, a connection between the device and thedifferential lever, a motor-speed controlling element, and a connectionbetween the element and the differential lever.

15. The combination of a motor-speedcontrolling element, two regulatingdevices operator, and means intermediate the devices and the elementserving to maintain upon the relative positions of the devices.

16. The combination of a motor-speedcontrolling element, two regulatingdevices adapted to be arbitrarily acted upon by the operator and meansintermediate the devices and theelement serving to move the element uponmovement of either of the devices, said means being constructed andarranged so that a certain movement of either device through any part ofits range of motion exerts substantially the same eflect upon theelement.

17. The combination of a motor-speedcontrolling element, two regulatingdevices operator, and means intermediate the devices and the elementserving to maintain the element in a position dependent upon therelative positions of the devices, the said means being constructed andarranged so that a stated movement of either device in any part of itspermitted range of movement exerts substantially the same efi'ect uponthe element.

18. In a motor vehicle, the combination ofqa clutch controlling member,throttle controlling means, and a common actuating de- "vice movablyconnected to said member and connected to said throttle controllingmeans and operative to control said clutch and adapted to be arbitrarilyacted upon by the the element in a position always dependent adapted'tobe arbitrarily acted upon by the p to move with the pedal, adilferential memthrottle individually or simultaneously at the will ofthe operator.

19. In a motor vehicle, the combination .of a clutch controlling pedal,throttle controlling means, and a common operating member movablymounted on said pedal and connected to the throttle controlling meansand operative to actuate either said pedal or the throttle controllingmeans at the will of the operator.

20., In a motor vehicle, the combination of a clutch controlling pedal,throttle controlling means, and a member permanently but movablyconnected to the pedal and said means and operative to adjust thethrottle controlling means individually or simultaneously With respectto the operation of the clutch pedal.

9.1. In a motor vehicle, the combination of a clutch pedal, throttlecontrolling means, and a combined throttle and pedal operating footplate movably mounted on said pedal and operatively connected to saidthrottle controlling means.

22. In a motor vehicle, the combination of a motor for driving the same,a clutch driven by the motor and controlling the driving of the vehicle,a throttle controlling the operation of the motor, a clutch controllingmember, and a device movably mounted on the clutch controlling memberand connected to said throttle, said device constituting commonoperating means for the clutch controlling member and the throttle andbeing operative to control the same individually or simultaneously.

In testimony whereof I have afiixed my signature in the presence of twoWitnesses.

f DEMPSTER M. SMITH.

Witnesses:

N. E. (3054132110, E. H. PARKINs.

